We propose a chiral Fabry-Perot cavity in which only the cavity modes in almost pure spin (circular polarization) states lase in the presence of gain. In absence of imposed nonreciprocal environments and time-reversal symmetry breaking of emitter states to favor the emission of circularly-polarized photons, only the resonance of modes with a specific spin orientation remains in the cavity. We d...

We report the first observation of non-Markovian stochastic resonance, i.e., noise-assisted amplification a periodic signal in system with memory. Our is an oil-filled optical microcavity which, driven by continuous wave laser, has memory its nonlinear response. By modulating cavity length while adding noise to driving we observe peak transmitted signal-to-noise ratio as function variance. expe...

We report subwavelength localization of electromagnetic fields within cavities based on metamaterials. Cavity resonances are observed in the transmission spectrum of a split-ring resonator and composite metamaterials cavity structures. These cavity resonances are shown to exhibit high-quality factors. Since the unit cells of metamaterials are much smaller than the operation wavelength, subwavel...

Nowadays, generation of energy-tunable, monochromatic γ-rays is needed to establish a nondestructive assay method of nuclear fuel materials. The γ-rays are generated by collision of laser photons stored in a cavity and relativistic electrons. We propose a configuration of an enhancement cavity capable of performing polarization control fabricated by a combination of a four-mirror ring cavity wi...

Abstract Optical feedback is a powerful technique to stabilise and narrow semi-conductor lasers. As step forward for field deployable, ultra-stable yet tunable sources, we analyse model the opto-mechanical design of V-shaped cavity optical (VCOF) reference cavity. We estimate relative contributions sources external disturbance on resonance frequency cavity, ultimately define minimal thermal mec...

Recent experimental advances in the field of cold-atom cavity QED provide a powerful tool for exploring non-equilibrium correlated quantum phenomena beyond conventional condensed-matter scenarios. We present dynamical phase diagram driven Bose-Einstein condensate coupled with light cavity, transverse driving red-detuned from atomic resonance. identify regions parameter space showing instabiliti...

The cavity perturbation technique is an extremely powerful method for measuring the electrodynamic response of a material in the millimeterand submillimeter spectral range s10 GHz–1 THzd, particularly in the case of high-field/frequency magnetic resonance spectroscopy. However, the application of such techniques within the limited space of a high-field magnet presents significant technical chal...